| Acronym | Definition |
|---|
| ECW➣Extreme Championship Wrestling |
| ECW➣Episcopal Church Women |
| ECW➣Eastern Championship Wrestling (formerly Extreme Championship Wrestling) |
| ECW➣English Civil War |
| ECW➣Entente Cycliste de Wallonie (Belgian cycling club) |
| ECW➣eClinicalWorks (medical software; Westborough, MA) |
| ECW➣Extreme Cold Weather |
| ECW➣Enhanced Compressed Wavelet |
| ECW➣Enhanced Compressed Wavelet (Image compression format created by Earth Resource Mapping) |
| ECW➣Extracellular Water |
| ECW➣Electronic Control Weapon (law enforcement) |
| ECW➣Entertainment Culture Writing (publisher) |
| ECW➣Emergency Conservation Work act |
| ECW➣End Corporate Welfare (Longwood, FL) |
| ECW➣Electronic Combat Wing |
| ECW➣Enameled Copper Wire |
| ECW➣Extraction Configuration Wizard |
| ECW➣Elliptical Cylindrical Waveguide |
| ECW➣Effluent Cooling Water |
| ECW➣Electronic Commerce World (magazine) |
| ECW➣Elite Crimson Warriors (gaming clan) |